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$503+ Cheap flights from Belfast to Illinois

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/19. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — ORD
Apr 7 — Apr 141
Mon 4/7
Mon 4/14
1 adult, Economy
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Cheap flight deals from Belfast to Illinois

Keep the following information in mind while searching for Belfast to Illinois flight deals. Data was last updated April 2, 2025.

Round-trip from

$777
(Mytrip)

One-way from

$503
(Kiwi.com)

Popular in

March

Cheapest in

September

Average price

$995
From Belfast to Illinois
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One-way flight from Belfast to Illinois
Search Deals
Highest demand for flights based on searches. 26% potential increase in price ($342 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($72 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Belfast to Illinois

Cheapest flights from Belfast to Illinois
Explore the most affordable flight options available from Belfast to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 2, 2025.

This Mytrip deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/19:10 pmBFS - ORD
2 stops33h 21mMultiple Airlines
Mon 5/127:47 amORD - BFS
2 stops30h 38mMultiple Airlines
Deal found 4/1$777
This British Airways deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/126:35 amBHD - ORD
1 stop15h 20mBritish Airways
Sat 9/139:15 pmORD - BHD
1 stop14h 00mBritish Airways
Deal found 4/1$1,130
This Virgin Atlantic deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/26:30 amBHD - ORD
1 stop13h 40mVirgin Atlantic
Fri 6/64:20 pmORD - BHD
1 stop18h 35mVirgin Atlantic
Deal found 4/1$1,142

Cheapflights Fare Finder

Customize your flight search to find flights from Belfast to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 2, 2025.
Use the filters below to find and compare flights from Belfast to Illinois that are best for you.

Fly from

Belfast

Fly to

Illinois

Route

Depart

Return

Price

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Thu 5/1

9:10 pm-12:31 am

2 stops33h 21m

Chicago O'Hare Intl

Mon 5/12

7:47 am-8:25 pm

2 stops30h 38m

$777

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Tue 8/12

6:35 am-1:50 pm

1 stop13h 15m

Chicago O'Hare Intl

Mon 9/8

9:15 pm-3:40 pm

1 stop12h 25m

$1,130

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Mon 6/2

6:30 am-2:10 pm

1 stop13h 40m

Chicago O'Hare Intl

Fri 6/6

4:20 pm-4:55 pm

1 stop18h 35m

$1,142

BelfastChicago

BFS - ORD

BFSORD

Belfast Intl

Sat 7/19

5:45 am-5:11 pm

3 stops41h 26m

$503

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sat 7/19

6:55 am-12:32 am

3 stops23h 37m

$674

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 5/16

10:20 am-7:00 pm

2 stops14h 40m

$964

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Sat 7/19

7:05 am-6:15 pm

1 stop17h 10m

$1,263

BelfastChicago

BHD - ORD

BHDORD

Belfast City

Fri 5/16

6:30 am-2:10 pm

1 stop13h 40m

$1,648

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Best time to book a flight from Belfast to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Belfast with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Belfast to Illinois

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated April 2, 2025.
Delta
8.0
Very good
7,899 reviews

Crew

8.5

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,899 reviews
Delta
8.0
Very good
7,899 reviews

Crew

8.5

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Virgin Atlantic
7.4
Good
636 reviews
Delta
8.0
Very good
7,899 reviews

Crew

8.5

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Aer Lingus
7.0
Good
1,060 reviews
Delta
8.0
Very good
7,899 reviews

Crew

8.5

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
British Airways
6.6
Okay
6,715 reviews
Delta
8.0
Very good
7,899 reviews

Crew

8.5

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Belfast to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Belfast to Illinois one-way?

    $964 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on British Airways and Delta, with prices starting from $1,263 and $1,648, respectively.

  • Can I find deals for flights from Belfast to Illinois that include hotel bookings?

    Yes. In addition to deals on Belfast to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Belfast to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belfast to Illinois.

  • Can I find deals for business class flights from Belfast to Illinois?

    Yes. Cheapflights offers flight deals from Belfast to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Belfast to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Belfast to Illinois (average of $245). Flying from Belfast to Illinois in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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